Air-feed for furnaces.



E. WINANS. AIR FEED FOR FURNACES.

APFLICATIONFILED MAR. 16, I914.

Patented Apr. 6, 1915.

Edwin WIT/V5885? EDWIN WINANS, oF-Nnw YORK, N. Y, AssIGNoR T CLARKE D.nAsHER, or NORTH GERMANTOWN, NEW YORK.

AIR-FEED FOB. FURNACES.

Specification of Letters Patent. Patented Apr. 6, 1915.

Application filed March 16, 1914. Serial No. 825,110.

To all whom it may concern: Be it known that I, EDWIN VVINANs, a citizenof the United States, and a resident of the city of New York, borough ofManhattan, countyand State of New York, have invented a new and ImprovedAir-Feed for Furnaces, of which the following is a full, clear, andexact description. r

This invention relates to improvements in air feeding devices forfurnaces, and has for an object to provide an improved structure whichmay be readily inserted into furnaces for supplying the heated airthereto so as to cause a better 'combustion'of the gases evolved fromthe gases in the furnace.

Another object of the invention is to provide an air feeding device forfurnaces which may be built, into the furnace or may be added to thefurnace at anytime.

In carrying out the object of the invention the device may be arrangedin' any kind of furnace desired. In arranging the device J thedistributing members are preferably mounted on the bridge wall of thefurnace so that the air therefrom may be mixed with the gases thatusually pass up the chimney unburned and cause a combustion thereof. Thedistributing member comprises one or more cross members and preferably apair of uprights, all of which are provided with apertures through whichthe heated air escapes. A feeding pipe is connected with thedistributing members and extends preferably from the rear of the furnaceeither through the wall or through the rear chamber of the furnace,whereby the heat passing therethrough will become heated before itreaches the point of discharge. This air may be'forced in under anydesired pressure so as to provide any desired amount of air to miX withthe gases.

In the accompanying drawings Figure 1 is a longitudinal vertical sectionthrough a furnace provided with an embodiment of the invention; Fig. 2is a transverse View of the furnace shown in Fig. 1.

Referring to the accompanying drawings by numeral, 1 indicates a furnaceof any desired kind provided with a combustion chamber 2 and a rearchamber 3 through which the smoke, gases and various products ofcombustion pass before escaping through the flue. The boiler 4 is ofcourse exposed to both the chambers 2 and 3 so as to be heated by thefire or hot products of combustion therein. During the ordinaryoperation of thefurnac'e the fuel in chamber 2 burns in the usualmanner, and is supplied with air in the usual manner for supportingcombustion. A flame passes upwardly and longitudinally along boilert-until the same reaches the flue. A suitable bridge wall-5 isprovidedrin order to cause theflame to travel near the boiler Land thusallow the boiler to' absorb heat therefrom. -During the ordinaryoperation ofv the furnace'it has been found that a large part of thegases evolve from the fuel in chamber 2 and pass out fiue'in a heatedconditiom'but-are not consumed. In order'to cause the proper consumptionor burning of this gas. air is supplied through pipe 6 and thedistributing member 7 which mixes with the gas just mentioned andprovides a suflicient amount of air to cause the gas to ignite and" thuslengthen the flame from chamber 2. The pipe 6 passes preferably throughchamber 3 so that the air discharged out of the distributing member 7 isheated to substantially the same temperature as the hot gases, wherebythe air will properly unite with the gases in order to supportcombustion.

If cold air was discharged into the hot gases there would be no chemicalaffinity between the cold air and the hot gases. and the result would beclouds or blocks of air and gas discharged out of the chimney withouthaving produced any beneficial results. By heating the air so that therewill be a chemical union sufficient to provide a proper combustion thegases are consumed which results in the production of additional heat inchamber 3. The burning of the gases and various usually unburnedproducts of of gases and also in a direction opposite the flow of gases,though other desired arrangements could be made. The end supports 9 are.provided with tubular uprights 10 which are also provided with aperturesfor discharging air. Preferably, only one transverse distributingbar ortube 8 is used, but if desired several of the same may be connected upin order to supply a greater amount of air in small jets. The idea is todistribute the air in various small jets so as not to insert largeamounts of air into a given quantity of gas asv the same will notreadily mix in that way. The pipe 8 and the associated parts arepreferably made from cast iron: or other suitable material which willWithstand the heat. It is to be noted. that the various: parts embodyingthe invention are designed to be placed on the bridge wall or othersuitable structure and not to be built therein so: that the device maybe applied and removed at any time, and may be readily inserted intofurnaces now in use.. order to properly clean the air distributingmember 7 a suitable steam pipe may be connected with pipe 6', and steamunder pressure may be: turned on to pipe 6. When this is: done a valvein pipe 6 is preferably shutso that the steam will be forced to passoutwardly through the apertures in member 7. It is. to bev under stoodof course when steam? is used such use is for cleaningpurposes and blowsout, the

smoke; and foreign matter from the apertures in member 7.

What I claim is In an air feeding device for furnaces, an insertible airdistributing member formed of a plurality of pipe sections, a pluralityof upright sections connected with certain of saidv first mentionedsections, a plurality of connecting ring members for said firstmentioned sections, means extending from said ring members forsupporting the same whereby a flame may pass over and under the airdistributing members, all of said sections and said rings beingperforated, and means-for feeding air in a heated condition to said airdistributing member, said air distributing member being in the directpath of the flame acting as a superheater for said air whereby the airis distributed in small-jets at approximately the same temperature asthe hot gases for more readily forming a chemical union therewith.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EDWIN WINANS. Witnesses:

LAURA 1 PALMER,- OIiA-RKE D. LASHER.

Gopies 032 this patent-may beobtained for'fiize cents each, byaddressing the f Gommissioner of Patents, Washington, D. G.

